Knitting-machine.



SWINGLEHURM KNITTING MACHINE.

APPLICATION FILED JUNE 28. 1911. l

- Patented Apr. 1, 1913.

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KNITTING MACHINE. APPLICATION FILED4 JUNI: 2a. 1911.

PatentedApr. 1, 1913.

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R O T Y N E V m HARRY SWINGLEHURST 5 E 5 S E N n w BY ms AATToFeNr-:Y

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entran. sTATnsfiS'ATENT oEEieE".

HARRY swINGLEHURST, OE BOSTON, MASSACHUSETTS, ASSIGNOR To SCOTT & W11,-

LIAns, INCORPORATED, OE cAMnEN, NEW JERSEY, A CORPORATION' OE NEWJERSEY.

KNITTING-MAOHINE.

To all whom t may concern Be it known that I, HARRY' SWINGLE- HURsT, acitizen of the United States, residing in Boston, Massachusetts, haveinvented certain Improvements in AKnitting- Machines, of which thefollowing Vis a speeltication.

My invention relates to circular knitting machines and has for itsobject the manipulationof the depressing picker bar .in 'that class ofmachines -which are usedfor the manufacture of 'seamless hosiery and inwhich a certain number of needles are rst picked out of action and theninto action again informing the heels and toes of such hosiery, and myinvention is applicable to a machine of the type shown in the patent ofGeorge D. Mayo, No. 726,178, dated April 21, 1903, and especially to amachine of that type in which the cylinder 'is revoluble and the camring stationary, as set forth in the application for patent filed byHarry Swinglehurst on the 18th day of May, 1911, Serial No. 628,055.

In the accompanying drawings-Figure l is va sectional view of sufiieientof the ma? chine to illustrate myA present invention; Fig. 2 is asimilar view illustrating some Of the parts in different positions fromthose shown in Fig. 1; Fig. 3 is a sectional plan view of certain partsof the machine taken .on the line a-o, Fig. l, Fig. 4 is a similarsectional plan view taken on the lin'e 5 5, 5, 6 and 7 aie faceviews, indiderent positions, of those portions of the Ordinary machine which actupon the -picker and impart to it movements other thanthose imparted bythe mechanism constituting the subject of my invention.

In the drawing, l represents part of the needle cylinder of the machine,2 one of the needles mounted so as to reciprocate vertically therein, 3va skeleton cylinder' surrounding the. needle cylinder and serving as aguide for the butts of the needles and Ll a po-st or standard-to whichis universally pivoted a depressing picker 5 for engaging the butts ofthe needles which have been lifted out of operative position during thenarrowing loperation in the formation of the toe or heel-pocket anddepressing these needles intov active position again for the wideningoperation, whereby the formation oi' said heelor toe pocket iscompleted, this depressing picker 'operating inv connection with aSpecification of Letters Pat-ent.

Application led June 28, 1911.

Vstem the picker 'shown in Figs. 2

Patented Apr. 1,1913. serial No. 635,575.

double cam plate 6 and a pair of sp'ring-ac-v invention relates tomechanism for raising lthe picker at the proper time from the position.shown in Figs. l and 5 to the raised position shown in Figs 2 and 6.Supposing thatJ the'picke'r occupies the raised position' shown in thelatter figures it will be struckby the butt of a raised needle andcarried forwardly with the latter.' vThis will cause the picker to pressuponthe plate? in ad- Vance of it, Vthus causing said plate to swingdownwardly on its pivot, with the effect of depressing the picker and.carrying down the butt ofthe raised needle with which said pickerengages. By reason partly of the downwardly swinging movementof theplate 7 and partly of the cam-like action of -the inner face of saidplate upon the picker finally reaches the position shown in'Fig. 7, andby this time vthe needle butt is freed from engagement wit-h it becauseof the arc of'a circle in which said needle butt travels. As soon asthe-picker is thus. freed the reaction of the plate 7 causes the pickerto move rearwardly and the picker stem rises on the cam 6 until itfinally reaches the apex of said cam and is there' retained by beingengaged between the front and rear plates 7, as shown in Fig. 5, untilitis finally again lifted to the position and by themechanism which Ihave deviset. `The duplex character of the mechanism provides for theproper operation of the picker irrespective of the direction in whichthe machine is re# ciproeating. l

In the machine of the Mayo patent before referred to the needle cylinderwas stationary and the cam ring had the necessary.

lrotating and reciprocating movements im parted to it in order to effecteither rotary knitting for the production of the leg. and foot of thestocking or to-and-fro knitting for the production' of the heel and toepockets. ln the. machine of 'the Swinglehurst application, however,these rotatingand reciprocating movements were imparted to the needlecylinder, the latter being carried by the gear ring 9, and the cam ringl() only f the machine is adapted a slide 12 which can be moved radiallyon said bed, said slide vharing a post 13 to which is pivoted a lever14, whose upper end is adapted to act upon the stem or shank of thepivoted picker 5 and raise the same from the intermediate position shownin Fig. l to the fully elevated vposition shown in Fig. 2, said lever 14having a projecting toe 15 which, at the proper times, is acted upon bya cam 16 mounted upon the base of the cam ring 10. Projecting upwardlyfrom the top of* the slide 12 is a pin 17 which is lengaged by theforked end ot an arm 19 carried by the upper end of a rock shaft 20, thelatter being adapted to bearings in the fixed frame 11 of the machineand having, at its lower end, another arm-21 with downwardly projectingpin 22 which enters a cam slot 23 in a'plate- 24, theV latter beingcarried by a ring or segment 2-5 which is mounted on the underside ofthe fixed frame 11 so that it may have reciproeating movement impartedto it at the proper times. Normally, that is to say duringround-and-round knitting and during that portion of the to-and-roknitting when narrowing is being performed, the parts occupy theposition shown in Fig. 1, the depressing picker 5 occupying itsintermediate positionso that it will not act either upon the butts ofthe depressed or active needles or upon those ci the raised or inactiveneedles. When, however, the narrowing operation has been completed andthe widening operatioiris about to be started, the ring or segment 25 isreciprocated by connection with some available part of the machine so asto cause inward movement of the slide 12 and of. the lever .14 carriedthereby, thereby bringing the toe' 15 of saidlever into the path of thecam 16 on the base of the cam ring 10, consequently, on eachreciprocation of the latter said cam willact upon the toe 15 and willcause the lever 14 to raise the picker 5 from its intermediate orinoperative position shown in 1 to itselevated or operative positionshown in Fig. 2, the picker being thereby caused to engage iii-st aneedle at one end of the active set and then a needle at the other endof said active set to depress the 'same into operative position in orderto effect the desired widening ot the4 web which being knitted,` or ifthe lift-ing pickers are permitted to remain-in action' during thewidening operation the lips of the -depress- 'der the iniiuence of thelifting picker. VV'henA the widening operation has been completed andround-and-round knitting is about to be resumed the ring or segment 25is' restored toits former position, thereby eiecting retraction of theslide 12 and withdrawal of the lever 14 to the inoperative positionshown in Fig. 1. The dropping of the lever 14 after it has passed fromunder the influence of the cam 16 is effected by its own weight,although, if desired, a suitable spring may be employed to aid in suchmovement, it being desirable to remove the upper end of said leverr 14from the path of the descending picker 5 when the latter is beingdepressed.

I claim:

1. The combination, yin a knitting machine of the rotary cylinder type,of a depressing picker which normally occupies an inoperative position,a lever for lifting said picker into position to engage with the buttsof the elevated needles, a cam 'for actuating said lever, means foroperating said cam,`

and means for moving the lever into and out of range of said cam.

2. The combination, in a knitting machine of the rotary cylinder type,loia depressing picker which normally occupies an inoperative position, alever for raising said picker into position to engage the butts of theelevated needles, a ring carrying the stitch cam and also provided witha cam for operating los said lever, means for reciprocating said camring when the direction of movement of the needle cylinder is changedvduring reciprocating knitting, and means for moving the lever into andout of range of the lever-operating cam on said ring.

3. The combination, in a knittin machine of the rotary cylinder type, ofa epressing picker which normally occupies an inoperative "position, alever for raising said picker into position to engage the butts of theelevated needles, a cam for actingon said lever,

means for actuating the cam, a slide guided A on the ixed bed of themachine, to which slide said lever is pivoted, and means for impartinginward and outward movement tosaid slide.

4. The combination, in a knitting machine of the rotary cylindertype, of a depressing picker which normally occupies ain inoperative position,a lever for raising said picker into position to engage .the butts ofthe `elevated needles, a cam for acting on said lever, meanstor'act'uat-ing the tam, a slidev guided 'on the fixed bed of themachine. to which 1 anA slide said lever is pivoted, and means for Intestimony whereof, I have signed `my imparting inward and outwardmovement name to this specification, in the presencia of 10 to saidslide; said means comprising a slotted two subscribing witnesses.

cam plate carried by a movable member of 5 the machine and a rock Shaftadapted to HARRY SWINGLEHURST' bearings on the xed bed of the machineand Witnesses: having two arms, one engaging said Vcam WALTER LABKIN,plate and the other engaging the slide. TRERESA F. MURPHY.

Copies o! this .patent may be obtained for ve cents each, by addressingthe Commissioner o! Pnfnts,

' Washington, JJ. C.

